/**
* Copyright (c) 2005 Andriy Bidochko. All Rights Reserved.
* http://www.mapbuilder.biz
*
* This code (including but not limited to the actual source code, documentation and database schemes) 
* is not freeware and is intended for the use of the original license purchaser according to the license agreement.
* The code all or in part may not be sold, redistributed, or included as part of another application.
* 
* THIS SOFTWARE PRODUCT IS PROVIDED "AS IS" AND LICENSOR MAKE NO WARRANTY AS TO ITS USE, PERFORMANCE, 
* OR OTHERWISE ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

// global request and XML document objects
var req;

// retrieve XML document (reusable generic function);
// parameter is URL string (relative or complete) to
// an .xml file whose Content-Type is a valid XML
// type, such as text/xml; XML source must be from
// same domain as HTML file
function loadXMLDoc(url) {
    // branch for native XMLHttpRequest object
    if (window.XMLHttpRequest) {
        req = new XMLHttpRequest();
        req.onreadystatechange = processReqChange;
        req.open("GET", url, true);
        req.send(null);
    // branch for IE/Windows ActiveX version
    } else if (window.ActiveXObject) {
        isIE = true;
        req = new ActiveXObject("Microsoft.XMLHTTP");
        if (req) {
            req.onreadystatechange = processReqChange;
            req.open("GET", url, true);
            req.send();
        }
    }
}

// handle onreadystatechange event of req object
function processReqChange() {
    // only if req shows "loaded"
    if (req.readyState == 4) {
        // only if "OK"
        if (req.status == 200) {
            clearAll();
            buildGeoSuggestList();
            // Enable address
            document.getElementById('LocationSearch').removeAttribute("readonly");
         } else {
            alert("There was a problem retrieving the XML data:\n" +
                req.statusText);
            // Enable address
            document.getElementById('LocationSearch').removeAttribute("readonly");
         }
    }
}


// Retrieve text of an XML document element, including elements using namespaces
function getElementTextNS(prefix, local, parentElem, index) {
    var result = "";
    if (prefix && isIE) {
        // IE/Windows way of handling namespaces
        result = parentElem.getElementsByTagName(prefix + ":" + local)[index];
    } else {
        // the namespace versions of this method 
        // (getElementsByTagNameNS()) operate
        // differently in Safari and Mozilla, but both
        // return value with just local name, provided 
        // there aren't conflicts with non-namespace element
        // names
        result = parentElem.getElementsByTagName(local)[index];
    }
    if (result) {
        // get text, accounting for possible
        // whitespace (carriage return) text nodes 
        if (result.childNodes.length > 1) {
            return result.childNodes[1].nodeValue;
        } else {
        	if (result.firstChild == null) return ''; 
            return result.firstChild.nodeValue;    		
        }
    } else {
        return "n/a";
    }
}